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Ethylbromo Acetate as an Olfactory Probe
Olfactory transduction mechanisms are best studied when specific blocking agents are available with which to modify cellular responses to odorant stimulation. This study is an electrophysiological investigation of functional group-specific olfactory acceptor mechanisms using ethylbromo acetate (EtBrAc), a World War I war gas which inhibits olfactory responses to odorant stimulation. The major findings of this investigation show that (1) vaporous EtBrAc is found to be a quick and effective inhibitor of electroolfactogram (EOG) responses to odorant stimulation, (2) isoamyl acetate is shown to protect EOG responses to a wide variety of odorants, inclusive of itself, from the inhibition effect of EtBrAc treatment, and (3) amine acceptor sites exist which are resistant to the inhibitory effects fo EtBrAc treatment.
Date:
August 1980
Creator:
McClure, Fred Leland
System:
The UNT Digital Library
A Bacterial Spectrum of Antibiotic "S"
This thesis is an investigation of Antibiotic "S" with the purpose of determining which organisms it has a marked effect on, the amount required to cause inhibition, its action in blood, and its therapeutic effect and toxicity in laboratory animals.
Date:
1949
Creator:
Matthews, J. Les (James Les), 1926-
System:
The UNT Digital Library
The Response of White Mice to Pituitary Gonadotropins of Fish
The purpose of this experiment is to determine if immature female white mice will react to the gonadotropic hormone from the anterior pituitary of several species of fish. If they can be shown to do so, a second purpose is to establish an assay unit for this fish gonadotropin in order that it may be used with predictable results in inducing extra-seasonal spawning for fresh-water conservation practices.
Date:
1949
Creator:
Doggett, Virginia Clair
System:
The UNT Digital Library
A Comparative Study of Egg Media in the Primary Isolation of Mycobacterium Tuberculosis
The primary purpose of this investigation is not only to improve the present technique of culture of Mycobacterium tuberculosis, but also to make a comparative study of the media use, namely, Veterans Administration modification of Trudeau's medium, Lowenstein's egg medium, and that developed by the author, in order to find which, if any, of these will most easily and effectively meet the needs of the hospital laboratory.
Date:
1949
Creator:
Barberousse, Loris J.
System:
The UNT Digital Library
An Investigation of Algae and Common Tastes and Odors in Fresh Water
The purpose of this investigation was to isolate and grow algae common to the southwest in unialgal culture; to either sustain or grow one of the principal bloom-causing organisms, with emphasis on Microcystis aeruginosa; to isolate and culture actinomycetes from the same waters from which the algae were obtained; and to inoculate these algae with actinomycetes and determine their effects through development and deterioration.
Date:
1956
Creator:
Harmon, John C.
System:
The UNT Digital Library
A Microbial Survey of Raw Ingredients Used in Finished Products at Kraft Foods Company, Garland, Texas
The purpose of this investigation is to determine through routine checks the number of organisms present in the various raw ingredients used for the preparation of foods. The problem has consisted of, first, a determination of the total bacterial population by numbers; second, a determination of the incidence of colon bacteria in the samples examined; third, a determination of the presence of yeasts and molds; and fourth, an attempt to utilize this information obtained in judging the methods of handling the raw ingredients before they are used in the processing of foods.
Date:
1951
Creator:
Langston, Clarence Walter, Jr.
System:
The UNT Digital Library
Treatment of Akr Mouse Leukemia with Specific Rabbit and Mouse Antiserum
This work is concerned with a study of the role of complement and antibodies in the serum of rabbits and of a non-susceptible strain of mice in the protection of Akr mice injected with active Akr tumor cells.
Date:
August 1959
Creator:
Dunkerley, Gary Beasley
System:
The UNT Digital Library
Pathogenic Bacterial Survey in the Trinity River from East Fort Worth, Texas, to South Dallas, Texas
This study was conducted from March 3, through June 2, 1951, in order to determine to what extent pathogenic bacteria were entering the Trinity River between East Fort Worth, Texas and South Dallas, Texas, from municipal sewage disposal plants.
Date:
1951
Creator:
Grizzle, Walter R.
System:
The UNT Digital Library
Biological Indices of Stream Pollution
A thorough biological survey and evaluation is a lengthy and expensive project. The number of technically trained persons required prevent its use by most public agencies. Since public health departments are the groups most frequently concerned with measuring the effects of pollution in streams, a need exists for a simplified method of sanitary survey. Recognizing this need, the Texas Health Department assigned the writer the problem of devising a method of survey which would require a field party of two and could be conducted entirely from a mobile field laboratory.
Date:
August 1952
Creator:
Russell, James C.
System:
The UNT Digital Library
A Solution for High Bacterial Counts in a Local Dairy, Denton, Texas
It is the aim of this investigation to determine through routine checks if the bacterial count in the milk from Brooks Dairy Company is high and if so to determine the source. If it is found that the laboratory plate counts are unnecessarily high, it is the further purpose of this paper to make recommendations for improvements in the quality of milk produced by this dairy plant.
Date:
1949
Creator:
Simonds, Thomas Hugh
System:
The UNT Digital Library
A Gas Chromatographic Study of Actinomycete Tastes and Odors
The primary purpose of this study was to continue the search for a suitable liquid phase which could be utilized in a gas chromatographic study of actinomycetic tastes and odors. Of equal importance were the attempts to characterize the compounds found in the odor water.
Date:
August 1966
Creator:
Hendricks, Albert C.
System:
The UNT Digital Library
A Quantitative and Qualitative Bacterial Analysis of Pecan Creek
Since Pecan Creek receives sewage wastes from an obviously inadequate disposal system, it seemed possible that it could receive pathogenic bacteria. The fact that these might be present in numbers sufficient to cause epidemics, provided the proper natural vectors were present, stimulated an interest in and the pursuance of this study.
Date:
1946
Creator:
Cook, Vernice
System:
The UNT Digital Library
The Effects of Selected Algicides and Some Coordination Complexes upon the Apparent Photosynthesis of Chlorella Pyrenoidosa
Many experiments have been performed with the Warburg apparatus, or variations of this manometric technique, since Warburg's experiments (52, 53) where the effects of cyanides upon dark reactions and of urethanes upon light reactions of photosynthesis were demonstrated. The same basic techniques were utilized in this research in attempting to determine the effects of some coordination complexes upon the apparent photosynthetic rate of Chlorella pyrenoidosa. A second goal of the present paper was to investigate the potential of the Warburg apparatus as a tool for screening algicidal compounds.
Date:
June 1965
Creator:
Phelps, Robert G.
System:
The UNT Digital Library
Antibacterial Effect of the Oleoresins of One Hundred Common Texas Plants upon Twenty-Five Gram-Negative Mirco-Organisms
This investigation deals with the study of the possible antibiotic effect of oleoresins of one hundred common Texas plants upon twenty-five gram-negative bacterial organisms.
Date:
1949
Creator:
Danhof, Ivan E.
System:
The UNT Digital Library
Specifity of Allergic Responses Following Injection of Simple Chemical Protein Conjugates
The purpose of this investigation has been to determine the characteristics of the immune response to 1-fluoro-2,4-dinitrobenzene when this hapten is conjugated with various types of proteins.
Date:
June 1965
Creator:
Lowke, George Edward
System:
The UNT Digital Library
Assimilation of Organic Carbon by Aquatic Actinomycetes
There were two purposes of this investigation: the first was to develop a method for studying spore germination, hyphal growth and mycelial development of the aquatic actinomycetes under the microscope so that the life cycle of this organism could be continuously followed. The second purpose was to determine the rate of carbon utilization from various types of nutritional sources, and to correlate this with the colony development and spore formation.
Date:
August 1963
Creator:
Shao, Yi-min
System:
The UNT Digital Library
A Spectrographic Study of a Selected Group of Actinomycetes
This thesis is a spectrographic study of a select group of actinomycetes.
Date:
1956
Creator:
Taylor, Robert Dean
System:
The UNT Digital Library
A Study of the Bacterial Flora of Food Utensils in Hardin College Cafeteria and Twenty-Five Eating Establishments in Wichita Falls, Texas
The problem of this thesis consists primarily of a bacteriological survey of the eating utensils of Hardin College Cafeteria and twenty-five other eating establishments in the city of Wichita Falls, Texas. This investigation was made primarily with reference to a determination of the possible presence of typhoid and related organisms, and secondarily to an investigation of the actual presence of those bacterial organisms associated with the more common outbreaks of food poisoning.
Date:
1949
Creator:
Adams, Isaac Newton
System:
The UNT Digital Library
Transport of Viable Dissemules of Algae and Protozoa by Selected Diptera
This research was designed primarily to determine whether and to what extent several species of Dipteria (true flies) carry viable dissemules of algae and or Protozoa "in-flight."
Date:
August 1966
Creator:
Revill, Donald L.
System:
The UNT Digital Library
The Histological Effects of Injections of Fish Pituitary Extracts on the Testes of Male Frogs, (Rana Pipiens), and the Reproductive System of Immature Mice
The purpose of this investigation was first, to make a histological and cytological study of the testis of male frogs, Rana pipiens, and to determine if there were tissue or cellular changes as well as physiological effects caused by fish pituitary-extract injections. Second, to determine if injections of fish pituitary extract into immature female white mice caused histological changes in the ovaries and uteri.
Date:
1949
Creator:
Robertson, William George
System:
The UNT Digital Library
Altered Leukemogenic Activity by Thyrotropic Treatment of Leukemic Mouse Thymus in Vitro
This investigation was planned to observe if the leukemic thymic tissue in vitro would inactivate TSH and to study the effect that TSH would have on the leukemogenic properties of these cells when transplanted into a high-leukemia strain of mice.
Date:
1956
Creator:
Rains, Robert Milton
System:
The UNT Digital Library
Morphological and Physiological Changes in Micrococcus Pyogenes Var. Aureus during Development of its Resistance to Terramycin
The problem in this investigation consists of, first, the procurement of several strains of Micrococcus pyogenes var. aureus; second, the comparison of the degree and rate of development of resistance of these organisms to terramycin; and, third, to study the morphological and physiological changes which occur during the development of resistance.
Date:
August 1959
Creator:
Watson, Gerald T.
System:
The UNT Digital Library
Studies of Fungal Antagonism in a Norfolk Fine Sand, Denton County, Texas
This investigation has had for its primary purpose the noting of the incidence of antagonists as occurring in a Denton County, Texas, Norfolk Fine Sand. A further interest has been the determination of the effect of these antagonists upon known beneficial soil organisms.
Date:
1948
Creator:
Frenzel, Louis D., Jr.
System:
The UNT Digital Library
The Effect of Aging on the Respiratory Response of Rat Heart Tissue Slices to Metabolic Inhibitors
This investigation was undertaken to explore biochemical changes which may occur in heart tissue with age. In this connection, the cellular enzymes were of special interest.
Date:
August 1962
Creator:
Couch, Ernest F.
System:
The UNT Digital Library